Today in science we did a lab called save a life. In this lab we had to build a life jacket for a miniature action figure using only a small piece of foam and a rubber band. After the we built the life jacket we dropped the man into water and he floated 4 of the 5 times he was dropped, so our design was successful. The reason it was successful was because we cut the foam in half and put one piece on each side of his body so that it was even. One thing that we could improve on our life jacket would be cutting more pieces of the foam and putting it on his hands and feet to give him an even better chance of floating. The life jacket causes the density of the man to change because it adds little weight and increases volume at the same time. That is how our man floated.